{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x60bbb530306cb9a7e2c93cd83549470c05647f049b46a6c1fc73ebbb43280e9c",
    "signature": "0x65aed8626905bb1e37992ecc87180dbb8f9a79670c6205d69c3f7dba9dd24ea27f8e4a95600597304a0f74b0f8c1ed8d2f5871c292b08e24ddc0e3c639d429f01c",
    "signer": "0x746989E3CC25A24543Ea3E5F339cd77016F44D5c",
    "userId": "475904773"
  }
}