{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf15a2c293ad449b351e1b40e45e09cf19fb305d8b3934b5099c041be10b306ad",
    "signature": "0x879ad69d22cf5b9d04a4859be0ee6d22b9e6f7abf80414262338b9052862b370179c95890ff76fdd04232535571597a4eb20c5e345934eb59f32db8c2f4d53b31b",
    "signer": "0x8FfE4D68AfdF34240202742331b49cb462b7e26C",
    "userId": "660197861"
  }
}