{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540848139",
    "entityType": "User",
    "nonce": "0x7944d66a6784c3d5202b87f62975c3b83440882f7da5e6f07eab6095f521e8ea",
    "signature": "0xab1996fccba82e3903479a40379695517ffa10b3a705accaec02c593ee978ba561a2571da0ec875413119fa900ca516f335c4566227e0c2391cb9a01cce2fd481c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}