{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfebfdc519eba03f43c9d68766790dafce073efb7d24ec9b92f982482daa9be64",
    "signature": "0xc4b0abde1bb688a966be6c79c8c6cf6a1ba0c72a434103f39c36c00fc4cacbc36d09cdaf961e1d4d2073c3b81afc2f4218420c028b2d32d2940cbeedfcd96dd41b",
    "signer": "0xbd46Bcac8C3e064551c2246449d84B4a406021f9",
    "userId": "273766994"
  }
}