{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "328108",
    "entityType": "User",
    "nonce": "0xd8910b497f1aaefa193061a4561fbd3a94c58b5a50ed3977962b3a58c63657a0",
    "signature": "0x53d42a790f564c477f6eabb34efbf6470936dfd271d64c9e348faed759638e362790aa3358bdf612ebf4e40ceaebe778bfea70dca6a163bb5d933042e7091c0d1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}