{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb24ba235b9cee5248bbceaab27d7efea270d65116130e54138a84bb91da12480",
    "signature": "0xd5fae1b6bcda62f6ead353238a191d2f5aaa79537218bf99c1f0995f3b6b10123878f370cdeccbf837ed9e40ed91bc6fcecee3948771ca51bd1c641201f40ba31b",
    "signer": "0x75Ac175898ba822E3976AECA46a68b5ebC237781",
    "userId": "660992790"
  }
}