{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "310808",
    "entityType": "User",
    "nonce": "0xccea161b2a4d7b4de850bd408484eb7e0f6489d6e8463496bcea60794c4d4c60",
    "signature": "0x89320119bbaf740d888be423a90817068e47220a7a3fe24643414125492685fb022e72d67c73ba9ac247801d249b2b967b444c5d9060fcf4fbab710b506cba721c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}