{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "278883",
    "entityType": "User",
    "nonce": "0xf9b47a7663c558e89d0b078d421176d361a09e2d1d031df58d9332ef7ecff2c7",
    "signature": "0x0377b5c14856e3debc33879ec3fe18ae2028caa6def7ee9a4b5241de2d71abea24953c5c80c2992260fcf8e0d2b8ba32560718555c72734642bce768919adc601b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}