{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "884533433",
    "entityType": "User",
    "nonce": "0x5a515d5387502fd60cde1e4f8f5a2e5d3702f7cb54e20584cb1dfa4b76caae0b",
    "signature": "0x13acbc6f876e2b4e1c8a77189662e29e6f4ef0eeb7f8a48c97f6912f03bd18225cbe8a5de0f556809d577c0a92d45ae7295232b25aa43df51df3ee0e32eddca81c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}