{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcdc87aa575429cf70d56f5c17e7a1879b66970fc9c25f2398c8081053d58216e",
    "signature": "0x5c1f52e0c5faf76b3416242dc435cd9e0b214e852f266df6115b0e7b649710f83ee7975e7cf1c88f4e8f665e86ad53ee5f1a3c202e94b67402b4dc01778010941c",
    "signer": "0xD31a71519F64F733530a3193d921FBebe3aa01A2",
    "userId": "486514977"
  }
}