{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5b95efe56649ab23befc18176cc4da3146593ef8132349444930c9e29914b2e2",
    "signature": "0xa5f1eb10974caa6f34192484125f4ebcad29078c056316489f129857629fbec90eb20d4ad8a73cef720e01a84c3938af9ba94832f8613339ecaf9bf4f73c050e1c",
    "signer": "0x28e203fd22baD9f51ecb9d1F4BebC201713003c7",
    "userId": "730312134"
  }
}