{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5fd1201966c2ebfc986d9136636d3ac9e999720dbd0cbfa5548ff28f7261f151",
    "signature": "0xc42dbd740b464fc11930a5aafce17cd34010c68837450784a5bf10aba4ddef660465a6fd071f95e595c574a2875fb9bb68f653e42226ed2ad315d71dbbdffcc71c",
    "signer": "0x6a1Eb4ec32E13e7Fb8de38d1aD02e5f2d35CF42d",
    "userId": "380866599"
  }
}