{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870318408",
    "entityType": "User",
    "nonce": "0x71b19fdaa1fd9366f03bf903d0951be4175041a0ccd26d077039a3ba9fb197f3",
    "signature": "0x68f448cfd14fbf47cf38996995247f58aee673225da989b90c5e852e705c5fd465aefc41dcb58a26ba85474e5dffaea9afa963ceaea00477b8cc6d67fd01a4801b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}