{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4786507594322cfcac30af774aba7cdddadf21dd97b088f01fbf8e89bfd5eb6c",
    "signature": "0x7568895347c60253a02da19b68e43f0ae01f557e9e41ce3753cfbd1c3eef4146797a09968ff2e180fe16fce28621c9024341c38e894ee5c6d9689af29dd6f81f1c",
    "signer": "0xa11ed4b4EC56ecd7AbcCeCC2E4902590eFe35bcf",
    "userId": "873254749"
  }
}