{
  "manageEntity": {
    "action": "Update",
    "entityId": "303348966",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xec20b2d8142b62ffe965a8c0974f239c7c9c4590a3357e1ffcec34d3e1c74034",
    "signature": "0xca7537afdc763b1e5dbfbf2c65df9db46c53d3afbb310564fea3eadd0fb801d34631e63ec7560f294ee5d215fa33487361a9c857a614929a59cd015d621091f61b",
    "signer": "0x721f076D6fdC57634d612324093cA69B47866867",
    "userId": "303348966"
  }
}