{
  "manageEntity": {
    "action": "Update",
    "entityId": "700802422",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb1fccaf445f1fa96e777b71fe9ac42a5f937f7ba26edbf9e93d179c9cd334c25",
    "signature": "0xc0bb321fe7a8bc9285cc7344af0ed011468616e7d5ce56b57913028956bbdddc095e140f7eeb9a1d12c78157d4381b986696e56f469e486bcff2a39112e813091b",
    "signer": "0x219dA21889F2ae8aFb067B6bC9626439bEB48907",
    "userId": "700802422"
  }
}