{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "423422344",
    "entityType": "User",
    "nonce": "0x01f2ed15d94033d893bd78293f2615dc6488db9cf14487b0eed5199c8ff6cc53",
    "signature": "0xfa163a1997a1aea4d3c5112bf4135c8e359cfda497525beeb5096125188f99f04ae0387522d1e158208460bb347142d7d0eca03d15b3b803bc4455cc5e2f8ac11c",
    "signer": "0x78a31AD6BE15091bacE2ABEd9D9814862EC1fFA2",
    "userId": "317688970"
  }
}