{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "73009851",
    "entityType": "User",
    "nonce": "0x2f6fd572a87dd9ed49fa917bbce2e6af9f0d6914dff2c9d04f68a281050faeb9",
    "signature": "0xb32853cda4d45748e6c504ec2892db2e57d2f0d97b06690589ce0327aaca22c765c4f4e550a04fe105461b34d902197e3d7592b59314c3eed4031e5425e5a3011b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}