{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "290283513",
    "entityType": "User",
    "nonce": "0x917b3fe5fb3dbb432e61dab8e4583bba0b9765e54bf9cdd6897db5243615af38",
    "signature": "0x455c505dcca9ed679bbcddd5001fe8cd029d5a1f9068eb5a4715c245c5f30d045bfda8fc930229934ea79fb89d53618e52a7f4f7132d1f40788090df4adbd4e61b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}