{
  "manageEntity": {
    "action": "Update",
    "entityId": "577412293",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xad39cf0e2b5d1634bf2c108947813026a8ada1c53ffdd2bf974fef3a3a570d31",
    "signature": "0x65e3b95e4a98aa7dcef5eb265a3daa0db58e2287c59c2c29d3b4edbac83b1a42546ca12d5e0411116b3ce99e2d193db1c57d6432fca50028d66c6f338dbcb2611c",
    "signer": "0x2147B2CDf9246a066970f23473B35056BD42dFB2",
    "userId": "577412293"
  }
}