{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "719574965",
    "entityType": "User",
    "nonce": "0x7fffd9958f4bc09915f17068c72bc271bb602ac8d4dc75b62d2bbcda36d2f616",
    "signature": "0xa75559ac040a8bce42fcde410efd93d629189c6348c89b75bfd67db06782e646682d8e8026687b1e3e21478bfe5c79a5a1f9a2d0d186e21f1ba39bca7bd03d241b",
    "signer": "0xb15e0969937058c681E67343137f40F72F50d99F",
    "userId": "790717795"
  }
}