{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "881446128",
    "entityType": "User",
    "nonce": "0xd8f90dfd40d9aaeacac1c0844fba1ed58046697f4a86c0fddc29fb0ff22fabb8",
    "signature": "0xffe0be53fb755e4dff6e633331a5704bc9931ee23484f0d20f91fa4222d4cc143e2d5129aaf09dc7b04cda60782db7ebf620ddca6b68adefe68200304eb37c581b",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}