{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7ba0d05ceb7b0d2107d9b1e3f8e0c9f8b8140d20cc32c8d3017e499e30d2837b",
    "signature": "0xca02ab748a08f66e631801f3bfcec4b35b700598aba43eb849a4c808f3b54a686048ed98c8cd9ad2a760544987e85c498e380986f3a6d304604dbe7bd30711201c",
    "signer": "0x31DF1a32b4B7f6bDB8c82B2684bDB8beFb00214b",
    "userId": "326346444"
  }
}