{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "296865",
    "entityType": "User",
    "nonce": "0xc66e9b7666d955379d0cec97c281d448b4ca1085fabd936d44254abf66b57e19",
    "signature": "0xf14e48920500b7df2cdf2cb89cb33a2439793ceb2bf8650794e1e3be8b0255590861a9aa9df26119b024c21c19d505ed0b2d7ecb0c070c64eef1fdc6e9caab6d1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}