{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121823",
    "entityType": "User",
    "nonce": "0x2aa34aeceeaf333ed8723437a6d9bde22622ef95cbac1f05e636d86836fe5257",
    "signature": "0x6baa51b44ae3f1e5e12b2c95ea1a449b2a1dd6494f139c1ea510b5093aae19613272013e76e205a67f4495e2c02bc23ba05de79f8554de5c74f51b9060aa75af1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}