{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "630783499",
    "entityType": "User",
    "nonce": "0x7f1b49626d2ec67ba1015a7807317690fddbbc18cc320b006ad09a20c286339a",
    "signature": "0x3a766339b54ab055e55b43ac5bad83ae99a4530e1757a42b316d6ed8984993d712a80e4b486193ef4723b73e4aa94ece1dd9df39b74f15e0cbe9e4aae2eb38ea1b",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}