{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "733190",
    "entityType": "User",
    "nonce": "0xf596ce02e62f046d7658148ff293b53bc856af4ff6b78985538a51697658851a",
    "signature": "0xec8c947351b1e88e94515b4fe8c1baaad53419f23fdc9d391ce8c601f74178177049b0ec72a4545202bc392f5d860653928ff1b458b87c0cfc2eeae5fcfd04801c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}