{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x1412d172b92999bd3eef5e1e7d7d698c72d29e13d967588ae0a04b68055f1997",
    "signature": "0x02f83bdd0f04184b8afbc70c1be7a39cb5a3e25a8ed79914bcc9e25b577751e171df6b2d8c3fffdfbac64193ae9af3447333d343b488d5320e5479ba0074336c1b",
    "signer": "0xd4172DACb313eb72C6Ee29bc685450908f4A1926",
    "userId": "407046354"
  }
}