{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "574670841",
    "entityType": "User",
    "nonce": "0x9a562773b1c0d4c07b1ab0414204bd4d19c123469b80200ae920c72587a375e0",
    "signature": "0x131071b07709990c3af95a27a343fddab27c9273a8c3a48e63ef692a2c1432ac0ce7ec3b78fe6713fde2887344698c75f2e8cf83a7b10995de9ffdec68e4fa611c",
    "signer": "0x5d60d60f715755f8bA9dF70cf1Aeb780Cb10Fc1F",
    "userId": "343259028"
  }
}