{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389970",
    "entityType": "User",
    "nonce": "0xa319a759642e2c0da299e3e0fd8db2d2ca7871e18ae3d2d7ca50b7f109430175",
    "signature": "0x132efff04bba02eb1ab3a23426bbc2ee0452cc46995ffb44b676e3f46c2d04bb3acfec390ee0e1036c37ea9ec7e2dbec5d390079f7ce6e78c14429c19d80994d1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}