{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x275395d5f47137f322f7fd8de51c10c44cb957946e4f26cacdebbe7af1a4a5b3",
    "signature": "0xcec5ceb47893fab541285537484c292a8a3cb8168f24b2f455d282d8f4c3598d498923ca08782aa7ec5215bba8edcb6e88c3853f21e8732a3a3da615d694018b1b",
    "signer": "0x14DFd5EDd904e1c348A6A5294873992bbdE69DC8",
    "userId": "73801109"
  }
}