{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "255342831",
    "entityType": "User",
    "nonce": "0x4c414b6e6cbbf583af2e6c35a628c12c901ea6a1fc08a99d773528e507a046a7",
    "signature": "0x0254f1c66e6437ebfe73ea8c833e3b986500930103d5cde2aece42376566cd262de379b7e182c84430aaf947c2a2636b40d5d75a2b1972a25299d092c781d8de1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}