{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb8c26b1e09d09084eb61917c2d513f6eb93724223186b0f1bfd01a137cacb6cc",
    "signature": "0x6addfe50a1a0b173febf89522ca61f65676de4d03571f0cdb393bd6c5967113071cda8bc7208b012ef34f2988849a14a8058a7cb23a571215b6b2607c49fa66c1b",
    "signer": "0xA819E5C5714510Db532e726DB8526f18026feA20",
    "userId": "505182311"
  }
}