{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "145417",
    "entityType": "User",
    "nonce": "0x40438eb95157e72e9ad19ed189f9bf87e2a01fcc4631935804099ccf8d25655b",
    "signature": "0x876e1a0c542b670beb3a9c45763be3d62c7b7ea08ca08169f2e5349627238f091151fa225a0965f2ec3c1b99c9a88b0565dab8ce9bd2acdd90ff4dde8e19ec6c1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}