{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "310535",
    "entityType": "User",
    "nonce": "0xb8ed6a2dc81567451fce01e6dbf1f5b526ea4a507b49292e033d2d2d36325a5b",
    "signature": "0x228fdfbe29c05ca50ad450a57e66611f9c9f7dcaa74bb711b93c24651383cad5061025c970b63d89a2f9cb14d8c61837591f00c8b884b66f5c70e5bc74dcd02a1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}