{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7504",
    "entityType": "User",
    "nonce": "0x0b1caca4a37cf6a828491fd63b55487a15a0770597d0093f498dce2620668f4b",
    "signature": "0x83449ea3e7bc8202756327c5a011c3365f2c8b9064d5e43f070068a3215f28525150534a787c72825c11eb5ab2373abc36318b673247bc80e74f7d10d0e6dd2e1b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}