{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0xfeb9da1ca512d537a52648776d508850938dc64f01c5bb3a9bfe3de83f994d8c",
    "signature": "0x1ef57b79015a8ff9361f5a084c475a2654acf84afe3d3c6baaeaa0795c76331a744872754a2797d048058c39e4831c5112215ef94f3c8f64f30e2085bd596ade1b",
    "signer": "0x60495664C60cF8427e991465f31ABe2F9dC345A5",
    "userId": "696978255"
  }
}