{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x55cd4e717db464eab764301c0ea944e21f40fd7a700bc88f9546314ad0a0a454",
    "signature": "0x8a6d53bef493bb85083645ad5f1d175d765c39f9642a7971b40095e1d97cf8d901d4b5ab83ebef3522231c03a65f9bf4ccb6fcd21fa90d33a6dd11b9058184551b",
    "signer": "0x663FBcbEEC703DA94AA8DD65612bbBE2119F09c4",
    "userId": "605457275"
  }
}