{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57602",
    "entityType": "User",
    "nonce": "0x7443a28ec80d9444c4b85df048a451975bd07ce2b2bcfedbe5c1b8677f4ba7a1",
    "signature": "0x6959da09b06f371fa8504d14dd8e3123661a4a1cf4dde58ec4317e97f353c75b20042929fe7fc5de09ecd48cf3ec9d5ace0de42a9c5f23d6c1b9218529bbd83b1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}