{
  "manageEntity": {
    "action": "Update",
    "entityId": "979158864",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4798bdb2d09729a8e9bb03242c00076625e9ff04b78714905b17b0e32fd395cc",
    "signature": "0xe3fb0fe9cb3be8aac1daaaf72b4711e50eb308b2a08d90cda76222c16063e7dc6ea194fd539914b6093bb34e909337623483857ae9389558ed948209dd0411c61c",
    "signer": "0x52D6B8976B9cc90C2d4bFF80df588576bD744785",
    "userId": "979158864"
  }
}