{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "299316902",
    "entityType": "User",
    "nonce": "0xb695de4759bad446b77dac942688148a0e3480f5c3e777cd6493fd648e1dddf8",
    "signature": "0x0afdf8e9e725dad8310290f6c3db1281d2e0972552cc1670c77b634b66f1c13735adf6aa121e4be62b3e7c0cb7974c2b8b5547b54c06bd212df419fce64c3f7c1c",
    "signer": "0xF800E0928f8e3D2620668c8e9CCA3ed56d3bca5B",
    "userId": "892227654"
  }
}