{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "273387437",
    "entityType": "User",
    "nonce": "0xf87f81ab9a852ce2d61cac9b584177ea34c4c9e03571c9f73aabe01c6a3fd011",
    "signature": "0x11467b9f73d208ce4f2137d5862012afb337c2969a969194e91899d67e19b5461521a0c2694ad7ed2e3c04a5bc1dcc875da9109829a718733497eb65e309b1951b",
    "signer": "0x3c154BbB8f1ac3df4a7721Eef2A2198c385D2a85",
    "userId": "587797478"
  }
}