{
  "manageEntity": {
    "action": "Update",
    "entityId": "206235141",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraxybzjylq2247bhcsttg63rxuv7ee33r5ba35r4c22l7a7cxumu3q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":513706476}]}}}",
    "nonce": "0xb2353c99f7034a2f2eb23aa97c7bbffb9abf8607ff727abe805e4166de175807",
    "signature": "0xa7851bd083445155f0146a6e1280762bf0357dddeb277e939b170a68a0c81304664f018eb60853c401d4c27b296def325f79c1605d6a6a8684e5b35888b78f0d1b",
    "signer": "0xE87810AdBeb88cee1a26E56469873118eBb15658",
    "userId": "206235141"
  }
}