{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1683799",
    "entityType": "User",
    "nonce": "0x12150bba54dd1224aada2caa42eee4236e460539bc4db7b86f0dba62e3764983",
    "signature": "0x757ef1ac2a34dd2b956ef3f9d5dc7bd11f31d68e0b53b184b059a882e064e52548643cc15a1e73e16d4c3677b56f3d8c4f7e431545443698ac91f19d1b6b24e61b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}