{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2001065",
    "entityType": "User",
    "nonce": "0xf4562bc4f1c098af87d401745bdd1de6c1bebedb1c1390bfe7923d7d1c5c1e69",
    "signature": "0x49645706fc016b09c440e267db8926accb78adf2ab4f73307a36775e5acfbfed4dd4a2ce3672bb37b8d16b2dc9a829d46441a823ee5da759f1dd15c45aa9c4c51c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}