{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "139146722",
    "entityType": "User",
    "nonce": "0x6518a505a7ee72b2f1faaf2e418fed2bfaa599db2450adfd49615d53993e9b27",
    "signature": "0x05e52a9478d312cc0d0072f62ee5cc40a6554671c73fdb824bb159c644a86d26298b878c12d681e449b0b4d2a7197a348f1d8b0d95d0c6915f69672c86e060311b",
    "signer": "0x4D386A3060c2b887771faBC7ab3462336663fAF3",
    "userId": "271191164"
  }
}