{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1903304",
    "entityType": "User",
    "nonce": "0xfeb534af330d890579cccbff9d90d9bc6b4b271519891591caba15876bcde0a3",
    "signature": "0xdd322e9d82f81a8be472ce116fc721ca0e35164317884c2b9aae5ce51a903ac01549b6d0c6a496047160f481bfd3d6ae6bb167141ddb2ea212c367f8ad4182f91c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}