{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x92e20d4eb52c4af0ef1746d4aa7767c57bc0b7e88151fbd682c6b4850c575d17",
    "signature": "0xba59ee3a415e3aa8431bc590cd65119c329b9a2c0e2209a8902b0da6fd16e6d64bc66928618302905747ab059e3e2bbd3e374705f42207de4e01f012aebfeba21b",
    "signer": "0x9309CF7E31e746ba3a2F447AA755547C2bCD28A8",
    "userId": "288200207"
  }
}