{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "431555736",
    "entityType": "User",
    "nonce": "0x8f38c4ec56c5e2ede947aad8329918a62515703ddd5c024dcbe88b0860a84ad3",
    "signature": "0x28d1709c1791ec33e893ecf05c0d6851a2c999399863912b7615f9470ffeefb86f4cf8ae854dc8bbaf541c3dc32cf8ec7f63d56598caab54839b9087d6daf0631b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}