{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5d93562e64d01a58ac5ed0b5211bf90b4251480922789a9873c356c3a5c8499d",
    "signature": "0xa78573df93123038ebfab3f143c0821919f495c5dfa343d79088cdcbd811efad306169e8b12d6c69bacc7c765be4a740befdce1ecb473993143b8e803ba540241c",
    "signer": "0xFD2162E1F7e40bc9c5EA89625a13675C62D7388e",
    "userId": "106774455"
  }
}