{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd1382851eb57ac264cdb67d58863d3272711ee4c1a39e327bfb9671d85ce8ea8",
    "signature": "0xf55d2f0f1b21f46959562ef5e7a24ea0f3987201cae9d6cd54abe4607a88cb2b6cddde09f94c54b5aeb6f782a1d5f380011266098c040f51f8e546aea4d068d91b",
    "signer": "0x2230770EC85946F97685aDECD4b734f51662F050",
    "userId": "887741865"
  }
}