{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "648443373",
    "entityType": "User",
    "nonce": "0x13280753aa68d1689a4eb63bc0ba22de18ba0f028f22a52fd1f05e645f336673",
    "signature": "0xf1b996e79fb5336f4470b7d365891a493abff8cab680b307e001efa4ec172fb65ce668a455cd950a38c22726df38af070fe3e9abab77bdf63330f38894cd7c241c",
    "signer": "0x0E6Ef8dF2F401D8918d603B82ef321D94A721556",
    "userId": "648802251"
  }
}