{
  "manageEntity": {
    "action": "Update",
    "entityId": "156736928",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x91ac611d6735f1d8c34eb220ed55b6af0ebf4e3ecba2911b38b1560e8c1aac68",
    "signature": "0xad5588d68d0b5822b5563491573064476714f4bb81d844a026a49cd5cc624dfc3b515fb43fb952031c6538579431252cd42b7469df2b8d2c574d4594a11d128e1c",
    "signer": "0x3Ab75Fba74e673Eaf4cC6f0E3B40264eff96E2e1",
    "userId": "156736928"
  }
}