{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319048",
    "entityType": "User",
    "nonce": "0xa18070fb41c6511476e0b5f7606be4b0c4b6c37ab89c6e5fbac7651fb52d7dff",
    "signature": "0xf192f6cab4ec2b91b05bff6f81e494f35f6813cd86e020f85c8b6019193e28bf4c354822004578a741dac2ee5c433b126b91cc37d72f83d35d39932597a287aa1b",
    "signer": "0xf4e39f23021D832A7D8e37A3e280Bb0E5bC75bFC",
    "userId": "406892069"
  }
}