{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1403212",
    "entityType": "User",
    "nonce": "0xfbe1b0d55984e1b2b258aeaf052159bc19f5748386abc9a240dc61e4c6dc44fb",
    "signature": "0xb9bd809e12af56b583c6df5aeed1b725b7e6e1f5bfe30a53dedebf120c81167a56b8555b80b4e446bd222c2493c8fb5291b3e406bcc13ac56ff7e7c712721a731c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}