{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1429398",
    "entityType": "User",
    "nonce": "0x60b1a54803cfe77aa4afa934d09a33f832a3ba0742de4922779c4c9c01e01d0d",
    "signature": "0x1712189fc410282bc4deab9b457d7097b8552ed1af3af4c5a1938f1954f81f3e6ceab8eea7b2b7c4bf605c8938a5cf8ae0911a3d9e90faf62de69b08be5a2b7d1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}