{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x392cb939f8483cf89f4abb83f6c0f8de09246b9ffd7b04812c28322a5f5a228e",
    "signature": "0xf3650f56a3f2fd9ba0562bc52b673a4a9fb321381f7a5d1fd659af2234d99496550afd8305deaa88b3300f8246011e950983365545c487e2b5569ef3a212ac371b",
    "signer": "0x61759FD9d69b6C29FE84fc39eaB6C50Cf7dCd8FC",
    "userId": "366953361"
  }
}