{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1550",
    "entityType": "User",
    "nonce": "0x3148fa3b460781421bb08bff13f02e3710312078ba7125e0669250b0bd9cdb98",
    "signature": "0x47ea78f364451c475ffc37d9473609496069a97b6d6f2a2dafc2ef02c5c37a773eb40aacfc4aeac2074dac424a81fd1d15cc50ddd02c03a3bc70de10655d3f261c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}