{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "491028850",
    "entityType": "User",
    "nonce": "0xbda5837fe6d66dfedb3f2e82f7c71008f01906d760b0bade9fc4c993ed4e05cc",
    "signature": "0x4a8b88acaf0c6b44f3a30df80129dbfacfde2ba6b8969779c00e0b3729ff84ab374c4ea69f00c9ec762d0d0036e39c1f63b80fbe3c5c3c4af2d7862d7904ebcc1c",
    "signer": "0xb90dea25446900B58b936FB95262D7557e6115B7",
    "userId": "559908939"
  }
}