{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "683609933",
    "entityType": "User",
    "nonce": "0x876b0e205564da9ebf3b3a1f2f7c025420ab6891b566e410a39de4269600648d",
    "signature": "0xe22aab4c246291b27c6c9e71158be50816b6b10d5ed0d085d452a54a77deda9447524dc0b0efdb1932b9f7c6b0d8ab3ca60028c2da4b8f08a3271d0353ddf3921c",
    "signer": "0xF40Be525727aa96Cf61609f0A493d9E677f73a33",
    "userId": "159460377"
  }
}