{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308439",
    "entityType": "User",
    "nonce": "0xbebb626699c3d6e4dd56fb74517a744e2244d5add84f63e1793075a190a34024",
    "signature": "0xcc31e47fe2eb5ef6b93a80532791743325e4891d340a70fd59512e832f815bab5a7958c2f87d5bb9c9321c87c8ff6f1c60c0f41ba858c310906df6189f7870f21c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}