{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "295001",
    "entityType": "User",
    "nonce": "0x20883a7ed8dc3a825bccdcd9534c95aaa8c961610d63a40ca2ec3f6e2058889f",
    "signature": "0xa3728fcf676da1c15c57d97d9fbbe2546fb650f7fdf3e4403f94f78fac5b3d6d0090ccef8ed9113e9e8fd734d9d45bdc1855c942e55d2908518bf111ec7afc6f1c",
    "signer": "0x19EDB4c1a8740c323f6e57B80F3422C01875289e",
    "userId": "390804"
  }
}