{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "135983",
    "entityType": "User",
    "nonce": "0xd0850720fdf7cedb1e0d46c7e1cbd8c025c712cd4e1eb133322e5455bf7e8f41",
    "signature": "0x21c6100c6d545f2b21d5ce32904390daf6929f90cc01ff72a18578310af6b49d1900087c4589c32b44780aeaab959f6e3761ba3dc1784dad0b005515347f6cda1b",
    "signer": "0xf74E514b76D35886B404c65E27340DE44B2E8FD9",
    "userId": "631610826"
  }
}