{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325",
    "entityType": "User",
    "nonce": "0x865dcfdf6226be6e5108d676155cdc3743c67f8a5b68056e75b2d7a4a697b9df",
    "signature": "0xf88536ed812957a078609508cc20276ef3cd8c2168464ea87e48daf207907f7642a7168ae01c497421abfa1b4cfcf05356601317dbe0ad7b645e4e3c8809f7181c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}