{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55290787",
    "entityType": "User",
    "nonce": "0x6e21792468f2807dae996ba0364434d37e7dcbb8f09143eadbc3a26542201813",
    "signature": "0xa2ea4a8e86d3fd783fa15afa32f9f7435c6229da4778350926fa16d3ffc503f4070c28719de10cb96eb737eff6b490e214527f1e7fab9c43a5c54e689b9ff2b91b",
    "signer": "0x63EbE5a1B5C5F156330BDf810f5fFf6A224c75c8",
    "userId": "309080"
  }
}