{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "784583291",
    "entityType": "User",
    "nonce": "0x04c900fd734cc1d98512dcc2e2061ef1cb9f4793fd18f1d1addd9f07191d12e9",
    "signature": "0x0f6189d337b326b10c03d88b7a144ae20f7888dae1d17e0132be18451bdc8d2871891c01dbf6e322a3b37205f0e9e0b6ca5ec741d7acc21fe18c514caff7e3811c",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}