{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12438",
    "entityType": "User",
    "nonce": "0x84077b9c78b7fd26a54d2ce3ab4668179d9ab8bd494b223e75633e9bd8a5f2f0",
    "signature": "0xbde32e8b57e7ed396c699fb62ccc7cb057fc59e198335797525294329cd29fa7558a2c8fdf60049f0c8036c1701836f0820f41af9e7223be6440a9f2f7ad0a2c1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}