{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "104697249",
    "entityType": "User",
    "nonce": "0x9c78a74e8cc58c37962aeef4d5f85f54db432b904e5bc4cd453e6352fca7ce32",
    "signature": "0x7b9eb57d9b036f5ea68ba8c8a9ac8174f413f3beb10495665f4d5baf9866d08b0e15a70f7d6b31504256a1d6feafa2aa51a6c9f2268392a7508d1024ad1c1dd61c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}