{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x515e00ae51d42d6c5bcd1dc6cf2212772416fbc93a64d82418e4bad127de3995",
    "signature": "0x004a183efb6153414724036a5e003b1928c6408663e3f30191ab153c3d36958e6aaa60258de362a7b2b7eaa9696c8bfffce646d4bf14b5da8561fd3290c4edea1b",
    "signer": "0x862aaEDB04B251891D6F8bE698DeD7953C861b8f",
    "userId": "424530664"
  }
}