{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0f93c8e9b549c70122cd379a5bb49c6d04e30429a9ca2518a047e60af67dfa7e",
    "signature": "0xa064a9ef832e57ae46347b60ffc4d1d01643fdc333c1916989a004c8a5c258044c9dc6bd86b6ec7ccf01dbcc85ac254c4e9f3fb73f7b59e8590e44636fc0fc261c",
    "signer": "0xb6fe96Dcbf74a63fDC955C459d5011Ee0aeE1957",
    "userId": "460950914"
  }
}