{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xba2e99abc2f63254b0979a7acb26a0276a3653d1968709a6562af8ce4d445012",
    "signature": "0x5520f431a438a3d49c766b320a1611705d2925dac0d3e32f1211a77a9ee863a77c9dbba7917f6dbcd72aa75e7e0c4b1ee0b6d902a3a7ca11797fd71aea9fda861b",
    "signer": "0x4B140b61EB41438Cda0Dd10473ad1334309C1b97",
    "userId": "45511108"
  }
}