{
  "manageEntity": {
    "action": "Update",
    "entityId": "173028850",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierajkr2s4txi3riwevju26mj453763v7jlsi74acmqicujcdtqtyj5q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1453686152}]}}}",
    "nonce": "0x02fb105a9468d2ccc31108a283d8096439f9e51d23dd0171c0e4c490b11f0d3b",
    "signature": "0x6b32c404e83d8319e9a669ddf2364a0f62801baf89676ce2fbb149574383523e24481c970b9f138d243fd5287445fa76b4d3174b5355bb509fe891fbfe19d0e61c",
    "signer": "0x5FCFd5b38744Dd2597489561951d9090bd8F3D59",
    "userId": "173028850"
  }
}