{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x04f9780f293d4754396ad283d7c125edb360e36beb4e2c825e0bfac0c6ca14d9",
    "signature": "0xa3dfef36398dabb8dda95a771b373208dce87ff5560a533f9a9fa43c2456ecd100627d9ddf687d3ada411b8a7923b0c87f7dcabcbd445f65cff91222efdacfff1c",
    "signer": "0x5EF959637A2d4ff6d582F465E96f3a2D7e3Cd648",
    "userId": "504281990"
  }
}