{
  "manageEntity": {
    "action": "Update",
    "entityId": "813889003",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2a192a596ed237ade7a40427292424ecd55a52b88df8067924a312301efccf11",
    "signature": "0x6ccf80db00091c117e23dfa0354013d116bfa720a2c42594b7f2e5171fcc4d7b1a8cf2f926fbbedf1c1eda8524bda59ea4ba5b4837349a2a00d4a2c514dd15a01b",
    "signer": "0x040E807b2C1CDA9AcE42451B1ca1326dc84cE86D",
    "userId": "813889003"
  }
}