{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7cbc033d32722feb99792b18ffebbe81be6045b83f4ec96048dac1ab4d010db2",
    "signature": "0x530d1abea1e2b582733b9b6aa2173c57f200bdcc2ac257ab5a3cc21eaef6e0e16fc01c8322ef72aa132d4b02aed4be1d5370850e3ea199e0cc005833bae10c191b",
    "signer": "0x25f8e4486CaEE405F1b7Afff1D975E301a0C63D8",
    "userId": "256999102"
  }
}