{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "397639592",
    "entityType": "User",
    "nonce": "0x19d9625a65b176f259598cca6c80e5411634151efb6d80f1e1671fcee09534f7",
    "signature": "0x6326cc6996af9d478586367cdb3ac564ad17cf2b15de82e5e2e03cba6871fe5b3e1e900a05c35cc5d33cae8168947ee025b897ca64e35d1731ce706eb63f55721b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}