{
  "manageEntity": {
    "action": "Update",
    "entityId": "305541868",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2cd0fabf30fda3fc7e7252d2541f9c48a17faa1d358579fe68fefceea10d6cad",
    "signature": "0xf22e64dfb0b84267083ff5f7aa90583d1ce184c4516b8c8ffdf7b93bbe2d18ef3e214f7d976d139e801c1674e3e1748c6b7c123d713a8a014a69dfc0eb2996051b",
    "signer": "0x546643B8F8164fB6dC42c93F65D31C17676Cd995",
    "userId": "305541868"
  }
}