{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "584066937",
    "entityType": "User",
    "nonce": "0x9a5c2357747851b1eb2b4d89d93357390967fc827e7ebf4d433bc17ec3b9ff7d",
    "signature": "0x46b641f43ccb89d026b9bbd45c2f0c015317bab09d4d1e303e4d3d7487fddbe7685a3cec8c01d4eea124389acec029f54b8e29e0a9ec5d6fe1a8f01c0983c2af1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}