{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "999692142",
    "entityType": "User",
    "nonce": "0xb3ac94cab10d43d6b1c54be39f6c8ab697dc2e525d96354b8928e4870e235709",
    "signature": "0xcfe5beb883e78cde789c2804446f89b9fa5081e219c970b9dac6f9e1a9114bfe4f4f126eaa0517124d31435ba860ee8e4fed3cfa2ce91517d42699656538086a1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}