{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54227",
    "entityType": "User",
    "nonce": "0xd1ba87958e09672fad1a5f77d0b94321be0c7cd7b00f136fd04448675a66ca97",
    "signature": "0xa78397da5784ba820fb226f78ff3b4e834b788959762a47b13495b7df38b49c34e4bdf90f95704ffff21238ad51b835c9ab758dabb90fd4a367a062f5c3646521c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}