{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "542098226",
    "entityType": "User",
    "nonce": "0x46cf8a1511b3509fe975c7321cff2bef65e29c54533009a2ac681c355fecac56",
    "signature": "0x2e29572103c1172eae3f9937c509c733c3790f2d3e905e3707f97ed0b25f59c30d9e932f500caff46e29b6f35713d2a7490709d44aaf4a164d010db2031d21ba1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}