{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "351990",
    "entityType": "User",
    "nonce": "0x0a454b54c5b1ac22f51524e1147abc18f7bcaa6a4c921e7f536c762f0a039583",
    "signature": "0xdec7cbc80e694514c2a82054c5d782cad970cd75fdf74342f91f1b88b4d94cf962c1c2f739278d52c72fd8eb23d97e98ee6903467f162f003145a061e64e15d51c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}