{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb11944dfda555c8f84ed67f6526360d6018ebcee2f04a1b67e50958adb3c8652",
    "signature": "0x7a4d025424928b565c1626d16241c38d731d11e4eb9d05018900ae6f4cbcaec2097f6cf81475a1d608f43b31f605918d80805056fe1ced0450d7c9b25d40f8981c",
    "signer": "0x3F058EE3eBF068c1141Fdd4d8b15571E21eCD247",
    "userId": "666300703"
  }
}