{
  "manageEntity": {
    "action": "Update",
    "entityId": "669970279",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf18b8adeb3fe92fc23a0e2c9e74c5c30046922b003db2e10430557aba0c8dc0c",
    "signature": "0x64e6c588c2a8c14340d5ba051f6361a73ee4738a2987fd6b102b84973fc8858960a83f426e903a4a6228e1c454dc7138b899b2a9ba3fff6d0b93e3ba08ef191f1c",
    "signer": "0x338073d8095c0dd589C0f4eCB6fE77788E699d67",
    "userId": "669970279"
  }
}