{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "336990",
    "entityType": "User",
    "nonce": "0x4117a459a7aaeef9f3ffd013ca6ebd4f3a65156624605f50ef338ed4d1351f82",
    "signature": "0x30935367167a6ce65b717c4b5f4e9bc3bcc5796126cee44dc0a5ad87e092d6a52fff953a9e648de51fef3013d5fee70ee11c013202c13f12456c1495ff05eb271c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}