{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "954424611",
    "entityType": "User",
    "nonce": "0x4ae5591d7d108e7439f9bfb93807ce1a1ae4a1292f556ba135e0c897d2763b99",
    "signature": "0x8216e51fb266bbec5063e9b2fc40b39ed728e21b3e8ca3245a83c0046cec2ecf4fce925a370dce0ae8fd2841731fe5dde055d49179f49a3cf3c22a3b1c47e7a21c",
    "signer": "0xE4c0c73a0c0CD7f65f1bE942f8127c8753aB89D9",
    "userId": "857284925"
  }
}