{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "814721941",
    "entityType": "User",
    "nonce": "0xe18b494e9081b4851a244c2eaf32d4719afaf3028108368ac0e93f99941a0e12",
    "signature": "0x549874feb3c6d57c70abfe8793d7714c3d708c6c9236f06691d857b49fc7335267032c0862cc94a699fbe7a72ea4862664a75015051d74d689c1fca1a98af3911b",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}