{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1819c4f758b9b0db5891d4dc0f6d375cad92cb731c2e51699b651aa9ac1d3d47",
    "signature": "0x4358c451e5f14ef1a7b9d4d534e4f383a7e510b7889df14ebead40c3928fdb387de2fa27df8cca4b87ae043be05d90b7c64795ca88c06cc77834ae2beaa1d2d61c",
    "signer": "0x20D87F586FAa7Dfc9dC413D1C38869ae0b43fCeD",
    "userId": "20166530"
  }
}