{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6a240b902a3018d1377083a54a32109deae8562bf955b7ca9d9bc6d2bd54789d",
    "signature": "0x25eaca1a450054f551eef684d2ba1c2aea57f243f74d322f5a20cd4621bb5d413735590fbd2de560cca044efa133f9dc1e8e726923a92d3077a9951eaecd9dbf1c",
    "signer": "0x19eF20eFb8D1bd538C96D8ca055ebCc2B66DF3b6",
    "userId": "730331422"
  }
}