{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "254860539",
    "entityType": "User",
    "nonce": "0x5bbf1b7498f1fd28f668022ed9227d7c7f2644a28da9e13d4fb14e8ea86c5168",
    "signature": "0xbc487bab9d10154aa6740b3156291ad59a2a51b9a15366dcd2fe61243d7e806b0d874363cae844f56647f9af1a074e1974965bfaadf9027d172aac62b61d28851c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}