{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508263176",
    "entityType": "User",
    "nonce": "0x40c1d9a7ce770e7ae55545fd248f05d36fecfeec15ee52ec8b0d9ffcc27c696b",
    "signature": "0x11d8abfb440c03fe1d561194f7bff03b2623457768f0cb6c6fb1dd39e956037f1d5db7de29ab6dec7ae3fa60c209384bb8f14d98ff4615e4a4c4fff9f80c5fa21b",
    "signer": "0x88b2b152dDFc63fA0fB3809f4D3d03310c4eB10E",
    "userId": "151269"
  }
}