{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "257465",
    "entityType": "User",
    "nonce": "0xe66dd8a2b7f4de522eac3388a06a64b080b93b0cce126bd23db2fa5b767976c4",
    "signature": "0x5317faabdc5ef3bbc6dd3f035f7e3e57dcea1da395b63e17f65920c08334e1625f94506a4627eab9ead52db417251a2ec0865a87fa2c57655916cf62134ab1ea1b",
    "signer": "0x48ECe992edB7C739B36f37DDbE8Fe352996B5A56",
    "userId": "183063753"
  }
}