{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x4bf7912b05568f3e5891a39f11f12b7bf570f44754b0df67e56f807d1ef4d5c4",
    "signature": "0x49830afc771c85b19e902d86bfb56a47e934243a6cb6c0cf7f52370952e750ff59fcda66855d3aa5d0a9bbcabf2abadf659f3bd772fa82cfe78ef24a68cfc7901c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}