{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf723be58879e0fd9de6e03b2c40b6d6fd59c40e7e63bbcefb3fd385f4707d123",
    "signature": "0x520684e49d376f11bda3b3779631e47420a86177eeec2137e86384e318e0d4a9377e4577eefbde0a03f845a1292209ac842870e79fac12d0e4b8f8aaf858da3f1b",
    "signer": "0x9Beb05748ef9A407E988F7D096473702b6c3D677",
    "userId": "971863365"
  }
}