{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1723411",
    "entityType": "User",
    "nonce": "0x2d87c8ee147784f0e02754b858c0ce49b224f92de52ccbc73945f50063b2bc02",
    "signature": "0xb1204808e08bdbd2a58212b136f1c8a79702c4db7549b39f307f446bf8c012691991f86869f0ad1ec8dfd9805e9d2386a8ad05a4dec362c0b4e20a8371d609201c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}