{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1882654",
    "entityType": "User",
    "nonce": "0x42244777398cf1cef1fe408618c5f8757efd1f0e07f9e2abe641a2b955e537a4",
    "signature": "0x7c328ccfce1f5fdaec72b99155a6006c4efa91d688011641678b15912c4f65b20d6b40ce622631ce0cc22d3062220ce2b499099e1dc20a542ea641a5c75dbfeb1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}