{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "647",
    "entityType": "User",
    "nonce": "0x3fa6e51824b0ef794e75fc86aeb087e5f35667bc38ecb715232c7bd5b30aca6e",
    "signature": "0x0cf9d5c3d9adc7253743bf099299864f40f2dec59813cb8bd715b460cd981bfd0183a9ce8839a6287de027deb2aea3d92b1896293c9d35fcd5ead5cf4facbaa51c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}