{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "307951199",
    "entityType": "User",
    "nonce": "0xeac909f783b9f0b71dc527c21de6ccdf5fe8db1f35c74532ce5fcabe9adbde55",
    "signature": "0xfece0d162c5bc8863a2cbf94a68d235ddfeaa0362c0d5f6d4be8bceb15a62af61f007bbdbc054c96ab0f2bac93d53cb643b6fe26dc4ebbfd595b072fb8dec6511c",
    "signer": "0x443e60705Bb4473f37a5c0f34e9E1DDc452B4197",
    "userId": "532926441"
  }
}