{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "683609933",
    "entityType": "User",
    "nonce": "0x31012bcb6c144959da3e3b13901ce553b28733cc73d3a32b0dd48777427388c4",
    "signature": "0x1318b5d65e01092c23a393c110d37b0b2e6fee1be7555b5743ba9cd928fc7c365ea1fec8cda8286127120a401ab6f989f25bc5bcc4dff3f5dbf6f2fd7a5849231c",
    "signer": "0xd367754F1CE503c2D28B6793582BC23fD71eE997",
    "userId": "420647095"
  }
}