{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "216497",
    "entityType": "User",
    "nonce": "0xff933478ec3740d0aac33f9c2fccd6e8cc0a7a8162d25d4ed5c17753512d534b",
    "signature": "0x5cb3a89743b626be5805fd8bf63f7e98483fa3cc485d02cbf3e625de31417d9c634794e799af7016d35971013f70423d36beba5f1597f9053de4a1d2ee7020321c",
    "signer": "0x742Fff9be20F80Ce7285c8Ab12B9018Ef3Cf14F0",
    "userId": "111467392"
  }
}