{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "486490947",
    "entityType": "User",
    "nonce": "0x7c51da4c485681ed637d5c5f201385f8367cfe5855cadb6b9d0e45c895323071",
    "signature": "0xe518fdc046508d82cffd477c5b9d386d54ceef3d94a6eae37e0dab11d1dc7c4205aa998ce031013c595e8c93841d7538d557219ae2efa930b4e424e7710cd9f81c",
    "signer": "0x1481F49fD2f6524D8CDC0089b13bbd2e6E9106F4",
    "userId": "231243"
  }
}