{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "52890",
    "entityType": "User",
    "nonce": "0xca95c56401101b02380fd1c190147b343f4b07008e443a89821e0e5ebee70d72",
    "signature": "0x9724991cdd4e133beb118bdc6ccf8df9fd2f9af7d910fa4c4f1af6c7aa72c6e25d27adffada2a2114e8c5737b8074d88a8a175ef2bd06f039b6c26fe642c6bf61c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}