{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x02c3969fa28b1e37cee82b6ec156a9f53b25270eeb05f11163df6c0ea35b6eed",
    "signature": "0x6d7f110c67533ea98828cd49be1e1ad0844796918426fa0f5423be4dce5956466bc3845ea4cd82c68c48864c0e07e11c48c253e2e33360eabaa7f16d2e5241ce1b",
    "signer": "0xCf3E6F9F4BF41C4e355E01484A92aaf61B6dd8a3",
    "userId": "149919577"
  }
}