{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x13d1b374317f28ba4ed56d5b363ae10410236e76e19ebe4c827c8f8b873b181f",
    "signature": "0xdc6dfb97d125fbbb2b169dceb8b55f7e2db51f8e36385f72d2feb048f68115f640a0a1bcb8cb71aadddea13e7c83b5da8cb8bb3df4abc1ee5efe599ac8b9d6041b",
    "signer": "0xb69df63f4665984786e139E6ed0495199c2deD66",
    "userId": "236095320"
  }
}