{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "865220",
    "entityType": "User",
    "nonce": "0x1621f3724526f041b459cf40298a2c4ddd0f9efa2b5b5cd0d33a65538b921680",
    "signature": "0x6c83e2082492d6d2e6afdc0c82434d34685b484e88818bcb4d87dcc54ae463a4547d4dfe43fcccfa19e3e7a76faee485f8e7603dfcc0e140a16b2a084271c4651b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}