{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1489779",
    "entityType": "User",
    "nonce": "0x37ff3b4d4f9e944d340f3e3be648d0b5c0b96856996d48b520492521e32e30ee",
    "signature": "0xe5537dd394b45a2c22f4f43df3091062878ac221a2654cf2d97fb50c4641a80c41607c89d15680d7da3e53906d7fdb421a949dc904e389fc5f8ea25919289f7c1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}