{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "951644728",
    "entityType": "User",
    "nonce": "0xb52b2ae0118ad673741cb2c6d0c4d487e0d504921092214b8c07e51e1aeaf11d",
    "signature": "0xf1d1c32ec0485b476eab623d6ccdbc0a1782cb706a34740a92d56bc0e2db80ef6b69497f94eeda69bbe71ae5d460342f66e7aadbb2054ec911f0c792b18206e71b",
    "signer": "0x38c65d779554649264FD5A23B412Dd6237e675c2",
    "userId": "839739705"
  }
}