{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "155973826",
    "entityType": "User",
    "nonce": "0x05c11152b572f282241e1b6d662c034ed461cb87f220873deb5904d3a123aeac",
    "signature": "0x162a210ba3db528849775eaa1b84f9573e37af9be70caf18f8a0077403e2f9694ee5c3c55cd97884ca026c0055fd5156522e9ca190029bc667b8de43acef23041b",
    "signer": "0x670E4517CCB95F2b528b0D6B0E50DC7a0f51f838",
    "userId": "555604608"
  }
}