{
  "manageEntity": {
    "action": "Update",
    "entityId": "38921479",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7c08fafaef3855f6814aac046eabd838a5f07c9e47d6194e895315840fa7daa9",
    "signature": "0xeef189f2f5f8f196e503ba1a3edd9a126534710f376f03772f42b1dbd55387c448bd3be5e841e2b68e74c8e1d23806d63c7cb1158991722a17a62d7572bdd80b1b",
    "signer": "0xe2Ce42f7ACc16Bd2Eb0753236b6216a6a38bBfd1",
    "userId": "38921479"
  }
}