{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x791db7e9142bb17802ac79a51f676c85cd59fc3a0d24f4740ee3363dcc4803fb",
    "signature": "0xb8f5c5ad1aaacf0af6b83e36674240b13c43f7f19663953cdcb5c175ee46f3d12bdd69c28ededfe6362085e528f283b4f742d6e18a88e1de65956cbe4250f3f21b",
    "signer": "0x68e36121996a3e2ce884bdC13F6F35b8C5d6aDfe",
    "userId": "453055507"
  }
}