{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "234822274",
    "entityType": "User",
    "nonce": "0x6b25da1ed7bfcd398507b6374f8df07af4f21639a58ca33cd99df49b1c22a36d",
    "signature": "0x427d28c84c362db921008b72e5226042847a0450d9116be096e222bdc279c8b966c4c3334628a92500c0406b1911c64ce1b7d33e9bea2048259d0fc4a4f146751b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}