{
  "manageEntity": {
    "action": "Update",
    "entityId": "999002860",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3763f0f8c0ee35619cfb084ffad7e743174389682a4e510ca221113066637516",
    "signature": "0xe9934abb6486cc911b37d9bdef55ae9a8d54a46dc56bbc47df07bbe16740e4c94b92680b8fe4e1fca2bc46468ac6434937365622face84fb51e594761b061b0d1c",
    "signer": "0x14647618553BB8A26AceAE7C85dB5b376300dA8F",
    "userId": "999002860"
  }
}