{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7ae34635465885f47d64c29d26399d4011d66134f75bfebb198003e49eeb51b2",
    "signature": "0x1ac2d686a6ca43aaaf10e7a939299931b456c0589f664b6a30fb06c43377b71d1d182120565a11c125f9925ac493d20389ce4bbcca1ecee90559a2e6592cfbea1c",
    "signer": "0x6135DFED4766632f3E2e097527cad142835825E1",
    "userId": "312072568"
  }
}