{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "386745392",
    "entityType": "User",
    "nonce": "0x2cd93299301f1d6d3a23f66eb545d8b25417fe6c30b59ce7a5d766623eeb6e00",
    "signature": "0xa3036f5405f0346f4dd517dee994c561176c21a91c13511567a04940e841c3f22a80e3d43da9356b30f8955caac3ddf6cd74224d0b149dc8e70d177919d00c801c",
    "signer": "0x20a821B898F6Cb6BB0E5FB2460eD4225B40Bd68D",
    "userId": "198400104"
  }
}