{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306896908",
    "entityType": "User",
    "nonce": "0xe72eeda898955d3fb6d713a53e0ad27926fe08fd45d6df6e8a9e3f65f0ad7338",
    "signature": "0x4082f38146aa63fec4a42d5d31e6e36dd1e7f763c6fbc3269424f94c6ecdad6e15832687a5d74ab93f63fc12d48518150d06eaff364b5b42c9c44fd973606d411c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}