{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0ad925437ccadef086086f08b2a620c83351166c11110d2c316a702b7593399b",
    "signature": "0x0585a66ceb7a153b163ea37f6f62d39f156a2b739af34c3438192a7ceca5fe236d03768023b84da4ad2ff711090965747cc519bd166c0566d563e84f2333e5011c",
    "signer": "0x016E626013d6c6929737c31A4fE0161bBc6E3cf8",
    "userId": "103104100"
  }
}