{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x65acfa729114c45a75d826f478004767f6077d4c3027dfb87c64c0e04f29c004",
    "signature": "0x817d13b3009b7904a1e78060f2e10c6e197b932fbc984af0a3380c3b83c3fa1a6aba869927c49af4826184c598b8f8d0ad140c7d19e758470a04d956f589a6891b",
    "signer": "0x12B5353A489D65A0791873da60bE5d8745F9e812",
    "userId": "199997702"
  }
}