{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7ddca9fe75aa5227cd59a4bc1043a037bae111f2495b0d1504fb0cbc7560f807",
    "signature": "0xec8a8ec0518c68ac0f1a176a3f600399b185af97958c0ae47cfb45211021fe32643699e16a175f0881a3fddf653ae9901f8d2b52cccb48e8ed615d9926fdd5e01c",
    "signer": "0xd4172DACb313eb72C6Ee29bc685450908f4A1926",
    "userId": "407046354"
  }
}