{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "681465788",
    "entityType": "User",
    "nonce": "0x722107ac6905e371f15e9dca8f40e10063a1148d0894578d93ee923c367139df",
    "signature": "0x8cc67a36071c81d1c6823eaf18f865765444804c6b596f8c3bd36efe90926d123c04a15189910c704dccd5aa70c5d01f4b85f02b5136268783c95ff30c5bdd171c",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}