{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "339926",
    "entityType": "User",
    "nonce": "0xe40c5f53741db7b4390c4ab6be1340db737cc15b81249aa6cb3f7a0b37655930",
    "signature": "0x31a14a42cad5c2a6e89f9c6aea1d9a4e62575e4c486d50412d5e18b634371add5f990906f58bb810a9df8ae7c82d84b1a1843015990047f7a6734dfe5a2c96a61b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}