{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "30263",
    "entityType": "User",
    "nonce": "0xa9985e8b31c91f224cf61cead5b94f3f06fb5c6b506116128eef4e5af7f75d3f",
    "signature": "0xfc8413d1eb1bfbe46a9107eea681b9461ce0c89a69eac2ded5e3d0a1941478ca06cf8f81b3d4f1e1c3701ad83f0fd253315aa5d7e253767a8d75f14282f095941c",
    "signer": "0xc23B5e8f2Ecf23Cb3a24a8BbBC3B82C4146eBE91",
    "userId": "273018072"
  }
}