{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0xd7b034a68516049c302b2c6e14866abfde20f557ac9157ef13ffdeaa7df60117",
    "signature": "0x3c0c45e735680bf4b049ae759a16cbdcce3551b35260d3a2c296d9b447c407c2289e3f85ab28be732cb07eb033f286d36b813d87dcc390d5eef89c50753068131c",
    "signer": "0x400C9A366Eff098F2ddA26E9da912FC9E092284b",
    "userId": "151067581"
  }
}