{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe01493765552d0a66c7649c19219382843772c1513e080c000539e37b543a701",
    "signature": "0x49e806d57c3f5bbbc3db107cc9cb27e7e8d6ee3198885af1ddba39a1bcfb00d50e7cc0f77a035233210d676996a166cf7185c89f3d66dea489d8614a178b408f1c",
    "signer": "0x1A03dB80e576Ab52a1E1852ba81778ae8f8f3f95",
    "userId": "876735576"
  }
}