{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "64629",
    "entityType": "User",
    "nonce": "0xa53507fa720c6dea69d3a33c5245bd5dc3d0cc1aa3c8e748d9ac2b4c16cb358d",
    "signature": "0x6afbb5d270261072f57b62252ee3a511d3aa7c0e3618c2fa3b6d2c393c3de4ac3b889fee9bb50c5dc88d1e4baf872cbb3932768b5cee50ae2a3d3078776a5bf01c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}