{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xcd37f2ddfde61c7ef9fd276ee744eb24c4950bee3f951d53aeed9fec38d3216f",
    "signature": "0xb18450e65e7b73ee00949d842767f99f5e59d0a986f6b698727889efd539c98b0287065d12c09af9f34f051a593f2fa64263ebdcf201f2c1fed8ae4a79ca69021c",
    "signer": "0x4771D256e7217EB6B247e8cBaFbbCb199424a6b2",
    "userId": "836389559"
  }
}