{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x203e89234a958f55043bd0018d01355b22614ea33394b03b41ca07cc03721025",
    "signature": "0xb7a6d9d49fc67722d7e5184266941a3a546c05a0dc97a0862be8fe46ed77fd2e20f0f80acb7e3c1b3f1d0fd687bc4d1d4e6d1a9563da584499a76232ef7e56d71c",
    "signer": "0x15d26005E9e18Ac96a165a2c593B5403fF71BF77",
    "userId": "776459554"
  }
}