{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4541",
    "entityType": "User",
    "nonce": "0x87a86937c8b03882383416750e8ff77b7baee7ae8053aa54add222302008c35d",
    "signature": "0xac7efbc42e0db1c9b676d78dc25b837d822735170ca196c7ed9a54b7dad453016fb482a14f8c136b350e7e6c8eab104cf0a6f9a3225298d3025592c26094abf51c",
    "signer": "0x0a5148A3f132E6696c1Cd3FDA8465fC5fF17d3D2",
    "userId": "803288761"
  }
}