{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "59503",
    "entityType": "User",
    "nonce": "0x1140228f619c43adc70f766fa7e5c63f6d2cf6e62a00e306b8ac0b5ecb7d1c95",
    "signature": "0xe73276314cf034fb885149333c8abd422067158614ac22390eaee68e3b1cd1416d3e16084ad8ba6f06d901eccfce9cacbf2a04daa045e0c152f0edf739247fbc1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}