{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "672",
    "entityType": "User",
    "nonce": "0x1f572ae0717281245505c9309c0a7fea97c09f1fd5aeaa04721648b0ef478e4b",
    "signature": "0x1ef93187d64bc40a5ec30369ad87cc3cb00110ebdc0f9820481a27146a550d9a5d018d0a8705cbb871e73df18b0a82c1699e7574b10ec795b72c3a1ca2170bb81c",
    "signer": "0xe23f94433EED8958AAF9868141BA976B8fffb969",
    "userId": "307915745"
  }
}