{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb3c8eacf62117ce2d85ac01123776a7ccb2a4edfd972ae5e83619b1fa445f41f",
    "signature": "0xa5e298abf476a2daa586ae272157fc3375e07d36b7f08c8908bc6e90e08c894f02c8b6f87e5b54042bd65658bde165819e1e653cb404d8ac663537695aaefe691b",
    "signer": "0xd076cC3FFeA7a187634969c81b0EDa807348CE8F",
    "userId": "90345939"
  }
}