{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "49600",
    "entityType": "User",
    "nonce": "0xd87bb817789538e694aa8fcf94834dfbf38d03347639a29872bbfc96daa17fa1",
    "signature": "0xc2555317acc4f9077f78b83b2e354af7cf0190e2a77e300f8a0b3ffe71c6c44e47d3da272501bf6de87fa0a8ba343951eabfa9b764f906138c3b222c180a0a941b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}