{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "320109",
    "entityType": "User",
    "nonce": "0x1403980e655419e5aaa5787590f64f0acce2936496943af1b9c320da4f36cb67",
    "signature": "0x004fd59ae00a75af4d2ea9773da5caad07fe10cd7c4ec96f5afdaf0fa77f57820d67fa034ac597c6ad0e7b552a8ad4c7206340d2ec3d688ca2a6322177b074e61b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}